To the OP, I don't see how that tech managed a 0.00 driving axis on the rear axle with the BMW system with static toe on each side being so far off from one another. The only thing I can think of is that the frame is not aligned and these settings were required to compensate for that.

Good luck!

That was the target - actual is listed on the right. I think I found the culprit. Props to Dirty.M3. This seems to be the sacrificial lamb of the rear suspension - both sides are pretty tweaked. The part does seem extremely flimsy, it is thin stamped steel.